Isometric 2.5D Game Engine

I want to make a game (turn-based RPG) that looks very similar to Bastion

Here is what I need to implement:

-> The overworld is 2d, with an isometric view. The graphics would in no way be rendered in 3D, but rather drawn in 2d.

-> The characters would be rendered in 3d, moving about in the 2d isometric world. (Even if the characters are in 3D in a 2D environment, its not much of an issue since a 3D character may actually be rasterized in a series of 2D images, in other words, this isn't much of a problem I feel)

I have looked at several game engines, but I find it very difficult to know which would be best to implement this sort of look and feel. Which game engine do you guys feel could be best for me so that I would have the least amount of coding to do for purely the isometric view aspect?